fix warning (#3563)

072f746c · Guolin Ke · GitHub · b80240ce · 072f746c
Unverified Commit 072f746c authored Nov 14, 2020 by Guolin Ke Committed by GitHub Nov 14, 2020
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include/LightGBM/feature_group.h include/LightGBM/feature_group.h +1 -1

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--- a/include/LightGBM/feature_group.h
+++ b/include/LightGBM/feature_group.h
@@ -18,7 +18,7 @@ namespace LightGBM {

 class Dataset;
 class DatasetLoader;
-class TrainingShareStates;
+struct TrainingShareStates;
 class MultiValBinWrapper;
 /*! \brief Using to store data and providing some operations on one feature
 * group*/